CIAT DYNACIAT LG 080, Инструкция по эксплуатации

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9.3 - Frost protection
The units are designed to be installed under cover at outside
temperatures b5°C and +40°C. Therefore they do not
include anti-freeze protection, as standard.
If the water piping is in an area where the ambient temperature
can fall below 0°C it is recommended to install a trace heater on
the piping and to add an antifreeze solution to protect the unit
and the water piping to a temperature of 10 K below the lowest
temperature likely to be reached at the installation site.
Use only antifreeze solutions, approved for heat exchanger duty.
If the system is not protected by an antifreeze solution and will
not be used during the freezing weather conditions, draining of
the cooler and outdoor piping is mandatory. Damage due to
freezing is not covered by the warranty.
Depending on the climatic conditions in your area
you must:
-
Add ethylene glycol with an adequate
concentration to protect the installation up to a
temperature of 10 K below the lowest temperature
likely to occur at the installation site.
-
If the unit is not used for an extended period, it
is recommended to drain it, and as a safety
precaution add ethylene glycol to the heat
exchanger, using the heat exchanger water
entering purge valve connection.
-
At the start of the next season, refill the unit with
water and add an inhibitor.
-
For the installation of auxiliary equipment, the
installer must comply with basic regulations,
especially for minimum and maximum flow rates,
which must be between the values listed in the
operating limit table (chapter 5 - “Application
data”).
-
To avoid corrosion by differential aeration, the
complete heat exchange circuit must be charged
with nitrogen, if it is drained for longer than one
month. If the heat exchange fluid does not
comply with the manufacturer recommendations,
the circuit must immediately be filled with
nitrogen.
9.4 - Flow switch (units without hydraulic
module)
The unit water flow switch must be energised, and
the chilled water pump interlock must be connected.
Failure to follow this instruction will void the
manufacturer’s guarantee.
The flow switch is supplied, installed on the evaporator leaving
water pipe and preset at the factory to cut out when there is
insufficient water flow.
Terminals 34 and 35 are provided for field installation of the
chilled water pump interlock (auxiliary contact for pump operation
to be wired on site).
9 - WATER CONNECTIONS
Dynaciat LG/LGN EN-46